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    • 3. 发明授权
    • Contrast agent imaging with destruction pulses in diagnostic medical ultrasound
    • 在诊断医学超声中具有破坏脉冲的造影剂成像
    • US06340348B1
    • 2002-01-22
    • US09348246
    • 1999-07-02
    • Sriram KrishnanGregory L. HolleyEdward A. GardnerSamuel H. Maslak
    • Sriram KrishnanGregory L. HolleyEdward A. GardnerSamuel H. Maslak
    • A61B800
    • A61B8/481A61B8/543A61B17/22004A61B2017/22008
    • The invention is directed to improvements in diagnostic medical ultrasound contrast agent imaging. In a preferred embodiment, high pulse repetition frequency (HPRF) destruction pulses are fired at a rate higher than necessary for receiving returning echoes. Pulse parameters can also be changed between the plurality of contrast agent-destroying pulses. Other preferred embodiments of the invention are directed to simultaneous transmission of multiple beams of destruction pulses. Destruction frames that consist of a plurality of destruction pulses can be triggered and swept over the entire region of tissue being imaged and at a variety of focal depths from the transmitter. The destruction frames are fired at some time triggered from a timer or some fixed part of a physiological signal, such as an ECG signal. Other preferred embodiments of the invention are directed to continuous low power imaging pulses alternating with destruction pulses triggered at a fixed point of a physiological signal, and a comparison of the received signals from imaging pulses fired before and after the destruction pulses. Alternatively, destruction pulses are triggered at a fixed point on a physiological signal different from the fixed point of a physiological signal used to trigger imaging pulses. In another embodiment, triggered destruction frames are used to enable a comparison of imaging frames in order to determine physiological functions, such as perfusion of blood in cardiac tissue. Finally, in another embodiment, destruction pulses are combined with subharmonic imaging.
    • 本发明涉及诊断医学超声造影剂成像的改进。 在优选实施例中,高脉冲重复频率(HPRF)破坏脉冲以高于接收返回回波所需的速率被发射。 也可以在多个造影剂破坏脉冲之间改变脉冲参数。 本发明的其它优选实施例涉及同时传输多束破坏脉冲。 由多个破坏脉冲组成的破坏帧可以被触发并扫过被成像的组织的整个区域并且在来自发射器的各种焦深处扫过。 在由定时器或生理信号的某些固定部分(例如ECG信号)触发的某个时间触发破坏帧。 本发明的其它优选实施例涉及与生理信号的固定点触发的破坏脉冲交替的连续低功率成像脉冲,以及在破坏脉冲之前和之后激发的成像脉冲的接收信号的比较。 或者,在与用于触发成像脉冲的生理信号的固定点不同的生理信号上的固定点触发销毁脉冲。 在另一个实施例中,触发的破坏帧用于使成像帧的比较能够确定生理功能,例如心脏组织中血液的灌注。 最后,在另一个实施例中,销毁脉冲与次谐波成像组合。
    • 5. 发明授权
    • Medical diagnostic ultrasound system and method for continuous M-mode imaging and periodic imaging of contrast agents
    • 医学诊断超声系统和连续M模式成像和造影剂定期成像的方法
    • US06174287B1
    • 2001-01-16
    • US09330547
    • 1999-06-11
    • Jeffrey R. ResnickSriram KrishnanRichard M. BennettGregory L. HolleyJoan C. MainJohn A. Davidson
    • Jeffrey R. ResnickSriram KrishnanRichard M. BennettGregory L. HolleyJoan C. MainJohn A. Davidson
    • A61B800
    • A61B8/481A61B8/08A61B8/543
    • A method and system for imaging contrast agent within human or animal tissue, organs and/or blood is provided. Contrast agents, such as perfluorocarbon gas-filled albumin microbubbles which exhibit momentary contrast enhancement when exposed to high intensity ultrasound are injected into a patient. Periodic images are generated to avoid reduction in the contrast provided by the contrast agents due to ultrasound destruction. Between the periodic images, an M-mode image is substantially continuously updated to allow the user to better locate and maintain imaging of a region of interest, determine dynamic movement within the region of interest, access attenuation, determine an appropriate trigger point, and view perfusion of the contrast agent between the periodic images while minimizing destruction of contrast agent. In one embodiment, an ultrasound system alternates between triggered firings of a two-dimensional B-mode image and substantially continuous updating of an M-mode image. The M-mode image is displayed as a strip revealing the time course of reflected ultrasound echoes along a scan line within the B-mode image plane. The B-mode image is displayed adjacent to the M-mode image. In a second embodiment, two-dimensional B-mode and color Doppler images are triggered. The Doppler energy parameter is used for generating the adjacent and substantially continuous M-mode image.
    • 提供了用于在人或动物组织,器官和/或血液中成像造影剂的方法和系统。 将暴露于高强度超声波时显示瞬间对比度增强的全氟化碳气体填充的白蛋白微泡的对比剂注射到患者体内。 产生周期性图像以避免由于超声破坏造成的对比度降低。 在周期性图像之间,M模式图像基本上连续更新,以允许用户更好地定位和维持感兴趣区域的成像,确定感兴趣区域内的动态移动,访问衰减,确定适当的触发点和观看 在周期性图像之间灌注造影剂,同时最小化造影剂的破坏。 在一个实施例中,超声系统在二维B模式图像的触发发射和M模式图像的基本连续更新之间交替。 M模式图像显示为沿着B模式图像平面内的扫描线显示反射超声回波的时间过程的条带。 B模式图像显示在与M模式图像相邻的位置。 在第二实施例中,触发二维B模式和彩色多普勒图像。 多普勒能量参数用于产生相邻和基本上连续的M模式图像。
    • 8. 发明授权
    • Personalized prognosis modeling in medical treatment planning
    • 医疗策划中的个性化预后建模
    • US08579784B2
    • 2013-11-12
    • US12944288
    • 2010-11-11
    • Sriram KrishnanR. Bharat RaoChristopher Jude Amies
    • Sriram KrishnanR. Bharat RaoChristopher Jude Amies
    • A61N5/00
    • A61N5/103A61N2005/1041G06F19/00G06F19/3481G16H50/30G16H50/50
    • Automated treatment planning is provided with individual specific consideration. One or more prognosis models indicate survivability as a function of patient specific information for a given dose. By determining survivability for a plurality of doses, the biological model represented by survivability as a function of dose is determined from the specific patient. Similarly, the chances of complications or side effects are determined. The chance of survivability and chance of complication are used as or instead of the tumor control probability and normal tissue complications probability, respectively. The desired tumor dosage and tolerance dosage are selected as a function of the patient specific dose distributions. The selected dosages are input to an inverse treatment planning system for establishing radiation treatment parameters.
    • 提供自动化治疗计划,具体考虑。 一个或多个预后模型表明作为给定剂量的患者特异性信息的函数的存活率。 通过确定多个剂量的存活率,从特定患者确定作为剂量的函数的存活率所表示的生物学模型。 类似地,确定并发症或副作用的机会。 生存能力和并发症的机会分别被用作肿瘤控制概率和正常组织并发症概率。 选择所需的肿瘤剂量和耐受剂量作为患者具体剂量分布的函数。 选择的剂量被输入到用于建立放射治疗参数的反向治疗计划系统。
    • 9. 发明申请
    • Segmentation of Biological Image Data
    • 生物图像数据分割
    • US20110286654A1
    • 2011-11-24
    • US13109457
    • 2011-05-17
    • Sriram Krishnan
    • Sriram Krishnan
    • G06K9/00
    • G06K9/0014G06T7/12G06T7/155G06T2207/30024
    • Described herein are systems and methods for automated segmentation of image data. According to one aspect of the present technology, systems and methods are provided for detecting regions of interest within biological images. In particular, first and second images of first and second biological samples are received, wherein one or more routine stains have previously been applied to the first biological sample. A region of interest in the first image may be segmented to generate a boundary. The boundary may then be transferred to the second image to segment a corresponding region of interest in the second image.
    • 这里描述了用于图像数据的自动分割的系统和方法。 根据本技术的一个方面,提供了用于检测生物图像内的感兴趣区域的系统和方法。 特别地,接收第一和第二生物样品的第一和第二图像,其中一个或多个常规染料先前已经施加到第一生物样品。 可以对第一图像中的感兴趣区域进行分割以产生边界。 然后可以将边界传送到第二图像以分割第二图像中的对应的感兴趣区域。